Yes, definitely dropping Behind the Ruins from KDP Select as of June 24. It's too limiting to be beholden to Amazon, with no access to Nook, Kobo, or other platforms like Screwpulp and Smashwords. The only bit of KDP that really annoys me horribly is that I have to let the 90-day enrollment run out. I suppose I could be a dick and just ignore Amazon's ToS, which would get it out quicker.
Hmmm. I think I'll go examine that option. I'll update what I discover.
Update: Well, on looking, it's unclear what repercussions that would have, other than Amazon deciding not to carry it in the main lists. Probably best left alone.
Oh! If you have a book in KDP Select be damn sure to go in and click off auto-renew or it'll be there forever. They've made sure it defaults to "we have your book in perpetuity" unless you pay attention.
It feels a bit greasy to me. I think Tokyo Pizza will opt out as well. Exclusivity isn't a good thing.